[Jackson, Thomas Jonathan], known as Stonewall Jackson, an American general, born in Virginia; bred for the army; distinguished himself in the Mexican War; retired from the army in 1853, and became a professor in Mathematics and Military Science in Virginia; was appointed brigadier-general in the Confederate army at the outbreak of the Civil War, and earned the nom de guerre of "Stonewall" by his firmness at the battle of Bull Run, July 21, 1861; distinguished himself in subsequent engagements; at Chancellorville was by mistake fired at in the dark and mortally wounded by his own men on May 6, 1863; he was a man of the Cromwell stamp, and his death was not only a blow to his own party, but matter of grief to the whole American nation (1824-1863).

[Jacksonville], 1, the chief seat of commerce (17) in Florida State, is situated on St. John's River, some 20 m. from its mouth; is a busy railway centre, and has an active river trade in lumber, cotton, fruits, &c., and is a health resort. 2, Capital (13) of Morgan County, Illinois, is pleasantly situated on a fertile plain, 34 m. SW. of Springfield; is noted as an educational centre, and for its many charity asylums; its manufactures embrace woollens, paper, &c.

[Jacob], a Hebrew patriarch, younger son of Isaac and Rebecca, the favourite of his mother, and had twelve sons, the fathers of the twelve tribes of Israel; his character and the story of his life are naïvely delineated in the book of Genesis.

[Jacob, Jean Claude], a serf from the Jura Mountains, 120 years old, who was brought from his native place to figure as "dean of the human race" in Paris at the great federation festival of June 1790.

[Jacobi, Friedrich Heinrich], a German philosopher, born at Düsseldorf; bred for business, and after engaging in it for a time threw it up for a revenue appointment; devoted all his by-hours to philosophy and correspondence with eminent men, and was appointed President of the Academy of Sciences at Münich in 1807; he formed no system and he founded no school; his thoughts present themselves in a detached form, and are to be gathered from letters, dialogues, and imaginative works; he contended for the dogma of "immediate cognition as the special organ of the supersensuous," and failed to see, as [Schwegler] notes, that said cognition "has already described a series of subjective intermediating movements, and can pretend to immediacy only in entire oblivion of its own nature and origin" (1743-1819).

[Jacobi, Karl Gustavo], a celebrated German mathematician, born at Potsdam, of Jewish birth; was professor at Königsberg and Berlin, and one of the founders of the theory of determinants (1801-1851).

[Jacobins], a political club, originally known as the Club Breton, which was founded in Paris during the French Revolution; so called from its place of meeting in the Rue St. Honoré, which had previously been a Jacobin friar convent; it exercised a great influence over the course of the Revolution, and had affiliated societies all over the country, working along with it; its members were men of extreme revolutionary views, procured the death of the king, exterminated the Girondists, roused the lowest classes against the middle, and were the ruling spirits during the Reign of Terror, of whom Robespierre was the chief, the fall of whom sealed their doom; they were mobbed out of their place of meeting with execrations on Hallow-Eve 1794.

[Jacobites], a name given to certain partisans of Eutychean sect in the 17th century in the East, from the name of their leader.

[Jacobites], the name given to the adherents of the Stuart dynasty in Great Britain after their expulsion from the throne in 1688, and derived from that of James II., the last Stuart king; they made two great attempts to restore the exiled dynasty, in 1715 and 1745, but both were unsuccessful, after which the movement exhausted itself in an idle sentimentality, which also is by this time as good as extinct.

[Jacobs], a German Greek scholar, born at Gotha; editor of "Anthologia Græca" (1767-1847).